The difference in hemodynamic responses between dominant and non-dominant hands during muscle contraction and relaxation: An fNIRS study.
The present study used functional near-infrared spectroscopy (fNIRS), and investigated the differences in neural activation of ipsi- or contralateral hemispheres between right dominant and left non-dominant hands among right-handed subjects using consecutive motor tasks with muscle contraction and r...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Public Library of Science (PLoS)
2019-01-01
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| Series: | PLoS ONE |
| Online Access: | https://doi.org/10.1371/journal.pone.0220100 |
| _version_ | 1818590015297421312 |
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| author | Naoko Yokoyama Chiaki Ohtaka Kouki Kato Hiroko Kubo Hiroki Nakata |
| author_facet | Naoko Yokoyama Chiaki Ohtaka Kouki Kato Hiroko Kubo Hiroki Nakata |
| author_sort | Naoko Yokoyama |
| collection | DOAJ |
| description | The present study used functional near-infrared spectroscopy (fNIRS), and investigated the differences in neural activation of ipsi- or contralateral hemispheres between right dominant and left non-dominant hands among right-handed subjects using consecutive motor tasks with muscle contraction and relaxation. The subjects performed tasks under four conditions: (1) right hand up (R-Up), (2) left hand up (L-Up), (3) right hand down (R-Down), and (4) left hand down (L-Down). The peak amplitude of oxy-Hb was significantly larger at the contralateral than ipsilateral hemisphere in the premotor area (PM) under the R-Up condition, and no significant differences were observed between contra- and ipsilateral hemispheres under the L-Up condition. In addition, the peak amplitude was more negative at the contra- than ipsilateral hemisphere in the PM under the R-Down condition, while the peak amplitude was significantly more negative at the ipsi- than contralateral hemisphere in the PM under the L-Down condition. These results suggest that the PM of the left hemisphere among right-handed subjects plays an important role in muscle contraction and relaxation with force control. |
| first_indexed | 2024-12-16T09:49:49Z |
| format | Article |
| id | doaj.art-962ec31b9e91494f8f8098da485648c4 |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-16T09:49:49Z |
| publishDate | 2019-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-962ec31b9e91494f8f8098da485648c42022-12-21T22:36:06ZengPublic Library of Science (PLoS)PLoS ONE1932-62032019-01-01147e022010010.1371/journal.pone.0220100The difference in hemodynamic responses between dominant and non-dominant hands during muscle contraction and relaxation: An fNIRS study.Naoko YokoyamaChiaki OhtakaKouki KatoHiroko KuboHiroki NakataThe present study used functional near-infrared spectroscopy (fNIRS), and investigated the differences in neural activation of ipsi- or contralateral hemispheres between right dominant and left non-dominant hands among right-handed subjects using consecutive motor tasks with muscle contraction and relaxation. The subjects performed tasks under four conditions: (1) right hand up (R-Up), (2) left hand up (L-Up), (3) right hand down (R-Down), and (4) left hand down (L-Down). The peak amplitude of oxy-Hb was significantly larger at the contralateral than ipsilateral hemisphere in the premotor area (PM) under the R-Up condition, and no significant differences were observed between contra- and ipsilateral hemispheres under the L-Up condition. In addition, the peak amplitude was more negative at the contra- than ipsilateral hemisphere in the PM under the R-Down condition, while the peak amplitude was significantly more negative at the ipsi- than contralateral hemisphere in the PM under the L-Down condition. These results suggest that the PM of the left hemisphere among right-handed subjects plays an important role in muscle contraction and relaxation with force control.https://doi.org/10.1371/journal.pone.0220100 |
| spellingShingle | Naoko Yokoyama Chiaki Ohtaka Kouki Kato Hiroko Kubo Hiroki Nakata The difference in hemodynamic responses between dominant and non-dominant hands during muscle contraction and relaxation: An fNIRS study. PLoS ONE |
| title | The difference in hemodynamic responses between dominant and non-dominant hands during muscle contraction and relaxation: An fNIRS study. |
| title_full | The difference in hemodynamic responses between dominant and non-dominant hands during muscle contraction and relaxation: An fNIRS study. |
| title_fullStr | The difference in hemodynamic responses between dominant and non-dominant hands during muscle contraction and relaxation: An fNIRS study. |
| title_full_unstemmed | The difference in hemodynamic responses between dominant and non-dominant hands during muscle contraction and relaxation: An fNIRS study. |
| title_short | The difference in hemodynamic responses between dominant and non-dominant hands during muscle contraction and relaxation: An fNIRS study. |
| title_sort | difference in hemodynamic responses between dominant and non dominant hands during muscle contraction and relaxation an fnirs study |
| url | https://doi.org/10.1371/journal.pone.0220100 |
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